/*  
 *  Copyright 2006 Paul Jack.
 *
 *  This file is part of the Dex compiler suite. 
 *  
 *  Dex is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License as published by the
 *  Free Software Foundation; either version 2 of the License, or (at your
 *  option) any later version.
 *  
 *  Dex is distributed in the hope that it will be useful, but
 *  WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
 *  Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */
package dex.compiler.interpreter.value;


import java.util.List;

import dex.compiler.checker.type.Type;
import dex.compiler.checker.type.TypeManager;
import dex.compiler.model.definition.Function;
import dex.compiler.model.program.Path;


/**
 * A function value.
 */
public class FunctionValue extends ReferenceValue {


	/**
	 * The path to the function's definition.
	 */
	final private Path path;


	/**
	 * The function type.
	 */
	final private Type type;


	/**
	 * Constructs a new function value.
	 * 
	 * @param manager  used to look up parameter and return types
	 * @param path    the path to the function definition
	 */
	public FunctionValue(TypeManager manager, Path path) {
		Function f = (Function)path.getDefinition();
		Type returnType = manager.toType(path.getUnit(), f.getReturnType());
		List<Type> ptypes = manager.toTypes(path.getUnit(), f.getParameterTypes());
		this.type = manager.getFunctionType(returnType, ptypes);
		this.path = path;
	}


	/**
	 * Returns the path to the function's definition.
	 * 
	 * @return  the path to the function's definition
	 */
	public Path value() {
		return path;
	}


	@Override
	public Type type() {
		return type;
	}
	
	
	@Override
	public String toString() {
		return null;
	}
}
